The professional bodybuilder-turned-actor joined in the topic, saying that such threads should be about inspiring people to work out, rather than arguing over the best method.

Schwarzenegger wrote: "Everybody, behave and stop bickering. This is about inspiring more people to get into fitness. I've never understood people who argue constantly about who is wrong and who is right in fitness, because the fact is, there are many 'right' answers, especially for people just starting out.

"Do you think Sergio Oliva and I did the same thing? No. In fact, you could walk into Gold's and watch the 5 best guys and see 5 completely different routines. And you know what? We didn't argue.

"Do me a favor. Try to focus more on expanding the fitness community as a whole than protecting your little corner of it."

The intervention from the former Governor of California has received many surprised and delighted reactions from other users, dubbing him "The Moderator".

One user wrote: "This is brilliant. I didn't get it at first until I re-read it in Arnie's voice. Well played sir!"

"Anyone going to continue arguing now the Terminator has spoken?" another comment adds.

A Reddit administrator even joked that the site would like to add Schwarzenegger to their staff, writing: "Hi Arnold, thanks for stopping by.

"We would be happy to offer you a Community Manager job if you would like to work for Reddit. I think your experience and skills would be very relevant, especially your time as Governor of California, since that state has a lot of crazy groups too.

"We offer competitive salary and benefits, including a subsidised gym membership and four months of paid parental leave."

Schwarzenegger thanked users for their positive feedback, and told them his favorite form of cardio, as a reward for "not fighting".